The SDGs enacted at the United Nations Summit in September 2015 set out "GOAL13: Specific Measures for Climate Change." In addition, the Paris Agreement, which was agreed at the Conference of the Parties to the United Nations Framework Convention on Climate Change (COP) in December 2015 and is an international framework for climate change issues after 2020, will mainly focus on CO2 by 2030. Japan's goal is to reduce greenhouse gas emissions by 26% from the 2013 level.
Under such circumstances, the International Civil Aviation Organization (ICAO), to which Japan is a member, has agreed at the 2016 General Assembly that CO2 emissions will not be increased after 2020, and is seen as a promising countermeasure. The introduction of biojet fuel is progressing in the United States, major EU countries, Canada and Australia, as well as Asian countries such as Singapore, Thailand, China and India.

On the other hand, in Japan, the introduction of bio-jet fuel has been delayed for major countries in the world.
Regarding biofuels for automobiles, the target is about 18% ^{* 1} by 2022 in the United States and 10% by 2020 in EU countries, and the goal is to use it as a breakdown of all automobile fuels ^{* 2}, but Japan. By 2022, the target for introducing biofuels to replace gasoline and diesel is only a few percent ^{* 3} per year.

• * 1: The target for introducing biofuels in the United States is set at 36 billion gallons in 2022, which is about 20% of the total fuel for transportation in the United States according to our estimation.
• * 2: From "2014 Petroleum Industry System Survey and Research (Survey on Trends in Foreign Countries and Operation of Sustainability Standards for Biofuels) Report" (Mitsubishi Research Institute, Inc.).
• * 3: From "Regarding the status of examination of the notification of the Advanced Law concerning the introduction of biofuels" (Agency for Natural Resources and Energy, Policy Division, Resources and Fuel Department).

As the introduction of biofuels progresses around the world, Euglena announced on December 1, 2015, the start of a plan for the practical application of domestically produced biojet diesel fuel (hereinafter referred to as the "Domestic Biofuel Plan") in cooperation with Yokohama City, Chiyoda Corporation, ITOCHU Enex, Isuzu Motors, and ANA Holdings. On June 1, 2017, construction of Japan's first demonstration plant for biojet and diesel fuel began, and construction was completed on October 31, 2018.
It will start full-scale operation in the spring of 2019 and manufactures "SUSTEO" using used cooking oil and microalgae Euglena (Japanese name: Astragalus) as raw materials.